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  #1  
Old 12-22-2002, 03:05 PM
unkl300d's Avatar
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Location: San Francisco, Ca
Posts: 2,267
Question w126 monovalve identity (?) partsshop ?

My 1989 300SE has no heat (climate control works fine) and I suspect the monovalve.

Apparently there is an insert which can be replaced if the diaphram is ripped.I located what seems like the monovalve.
Facing the battery, to the right of it behind a firewall.
I see this silver color square plate with a small cylinder in the middle and a small harness plug.
Four screws hold the plate down.

If this is it, are there any precautions to take for removal?

I hope partsshop has the insert.

thanks

Happy Holidays
__________________
1979 300D 199 K miles
1995 C280 95 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
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  #2  
Old 12-22-2002, 03:25 PM
MikeTangas's Avatar
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Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Danis,

FastLane has just what you need right here , take a looksee.
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

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  #3  
Old 12-22-2002, 09:27 PM
Mike Murrell's Avatar
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Join Date: Feb 2000
Posts: 2,351
This URL might help with replacement of the monovalve insert:

http://mbdieseldiy.tripod.com/monovalve.htm

Be sure that you get the small silvery-looking plate on top(4 screws) snugged down good; otherwise, you'll lose coolant.
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1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
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  #4  
Old 12-23-2002, 01:15 AM
unkl300d's Avatar
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Join Date: Jul 1999
Location: San Francisco, Ca
Posts: 2,267
Thumbs up Next stop, partsshop

Thanks heaps Mike and Mike!!


With this info I am sure of the identity and how to safely proceed!!

Mike Tangas, I was thinking about you the other day because I still have to replace the grill of my W123. Spring time project!

Happy Holidays.

Denis
__________________
1979 300D 199 K miles
1995 C280 95 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
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  #5  
Old 12-23-2002, 01:58 AM
MikeTangas's Avatar
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Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
I'm just waiting patiently for the pictures .

Shoot, if we wait long enough I'll be making 3-4 trips to the Sac area next year, maybe I'll just have to shoot on over and bolt it up for you :p LOL.
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #6  
Old 12-23-2002, 02:55 AM
unkl300d's Avatar
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Join Date: Jul 1999
Location: San Francisco, Ca
Posts: 2,267
Thumbs up HOUSE CALLS

That will work !
__________________
1979 300D 199 K miles
1995 C280 95 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
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  #7  
Old 12-29-2002, 04:48 PM
unkl300d's Avatar
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Join Date: Jul 1999
Location: San Francisco, Ca
Posts: 2,267
Thumbs up Job Done

Well, thanks to Fast Lane, I received the monovalve (and a new hood star) in one day.

I have heat now, thank goodness.
Thanks again Mike for the needed repair instruction
web-link.

Denis
__________________
1979 300D 199 K miles
1995 C280 95 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
Reply With Quote
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